3. The genetic code is commaless, which means that no codon is reserved for punctuations. It means that after one amino acid is coded, the second amino acid will be automatically, coded by the next three letters and that no letters are wasted as the punctuation marks (Fig.
Summer solstice is the first day of summer - it's usually between June 20th and June 23rd. In 2016, the summer solstice takes place on June 20th. We know it's summer because the earth's axis tilts toward the sun from June to September - this means warmer weather and longer days.
The day of the summer solstice is the longest day of the year. The length of time elapsed between sunrise and sunset on this day is a maximum for the year. In the United States, there are about 14Â½ hours of daylight on this day. June is the traditional start of Hurricane Season in the United States.